Chute C G, Smith R P, Baron J A
Am J Public Health. 1987 May;77(5):585-7. doi: 10.2105/ajph.77.5.585.
In a mail survey, 171 Hitchcock Clinic patients with giardiasis were compared with an age- and sex-matched control group of 684 clinic patients with respect to potential risk factors. Households with shallow well or surface water sources had an odds ratio (OR) for giardiasis of 2.1 (95% confidence interval (95%CI) 1.3-3.2) compared with households with drilled well or municipal water supply. Other observed risks include family member in day care program (OR 2.2 95%CI 1.3-3.7) and family member with diagnosed giardiasis (OR 17, 95%CI 7.4-37). Previously reported risks such as travel out of country (OR 3.2, 95%CI 1.5-7.2) and camping (OR 1.7, 95%CI 0.9-3.2) were also observed. Virtually no giardiasis risk was observed associated with report of dog or barnyard animal proximity. Control for confounding and adjustment for recall and non-response bias does not materially alter the risk estimates. We suggest that shallow well or surface household water source is an important and previously unrecognized giardiasis risk factor.
在一项邮件调查中，将171名感染贾第虫病的希区柯克诊所患者与684名年龄和性别匹配的诊所患者对照组就潜在风险因素进行了比较。与使用钻井或市政供水的家庭相比，使用浅井或地表水水源的家庭感染贾第虫病的比值比（OR）为2.1（95%置信区间[95%CI] 1.3 - 3.2）。其他观察到的风险包括家庭成员参加日托项目（OR 2.2，95%CI 1.3 - 3.7）以及家庭成员被诊断为贾第虫病（OR 17，95%CI 7.4 - 37）。先前报道的风险，如出国旅行（OR 3.2，95%CI 1.5 - 7.2）和露营（OR 1.7，95%CI 0.9 - 3.2）也被观察到。几乎没有观察到与报告的接近狗或家畜有关的贾第虫病风险。对混杂因素进行控制以及对回忆偏倚和无应答偏倚进行校正并没有实质性改变风险估计值。我们认为家庭浅井或地表水水源是一个重要且先前未被认识到的贾第虫病风险因素。
